Adjustable square



FIG. 1 is a perspective view of an adjustable square, embodying our new design;

FIG. 2 is another perspective view thereof showing an alternate position of an element thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The article is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for an adjustable square, as shown and described. 